Chief Inspectors speech will step over the inspection role.
The chief inspector of schools has backed calls for mobile phones to be banned in schools.
Amanda Spielman will announce on Thursday her support for any headteachers who choose to introduce policies that forbid children from using their phones.
Speaking at the Wellington College Festival of Education, the head of Ofsted will say: “There’s no doubt that technology has made the challenge of low level disruption even worse, which the way is why I also support recent calls to back heads who have decided that the way to improve behaviour is to ban mobile phones in their schools.
“I’m not the target audience, but nevertheless I am yet to be convinced of the educational benefits of all day access to ‘Snapchat’ and the like; and the place of mobile phones in the classroom seems to me dubious at best.”